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Math II Videos 98 videos
This video covers both independent and dependent events, although we much prefer independent events. Dependent events are just so dang clingy.
Disjoint events are events that cannot happen at the same time. If one happens, the other doesn't. Simple as that. Overlapping events, on the other...
SAT Math 1.1 Numbers and Operations. How many combinations of beverage and cereal can be made?
ACT Math 5.3 Intermediate Algebra 384 Views
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Description:
ACT Math: Intermediate Algebra: Drill 5, Problem 3. What does f(g(-1)) equal?
- Intermediate Algebra / Functions
- Product Type / ACT Math
- Foreign Language / Arabic Subtitled
- Foreign Language / Korean Subtitled
- Foreign Language / Chinese Subtitled
- Foreign Language / Spanish Subtitled
- Functions / Build new functions from existing functions
- Functions / Build new functions from existing functions
- Functions / Build new functions from existing functions
- Functions / Build new functions from existing functions
- Intermediate Algebra / Modeling
Transcript
- 00:02
Here's an unshmoopy question you may find on an exam somewhere in life...
- 00:06
If f of x equals 1 over x plus 1, and g of x equals x squared, what does f of g of negative 1 equal?
- 00:13
And here are the potential answers...
- 00:19
It's asking us about composite functions.
- 00:25
When we solve for f of g of negative 1, we're basically trying to find the result of g of
Full Transcript
- 00:31
-1 when sent through the function f of x.
- 00:36
g of negative 1 is just negative 1 squared...or 1.
- 00:41
This gives us f of 1... with 1 as our new x value. 1 over 1 plus 1 equals 1/2.
- 00:50
So the answer is D.
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